Six-wheel-truck equalizing arrangement



J. A. LAMONT AND L. RICHARDSON. SIX-WHEEL TRUCK EQUALIZING ARRANGEMENT.

APPLICATION FILED MAY 24, 1922.

Patented Dec. 5, 1922..

Patented Dec. 5, 1922.

JOHN A. LAMONT, OF CHICAGO, ILLINOISE,

AND LA'W'RENCE RICHARDSON, OF LOUIS- VILLE, KENTUCKY, ASSIGNCRS T AMERICAN STEEL FOUNDRIES, O15 CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

SIX-WHEEL-TRUCK EQUALIZING ARRANGEMENT.

Application filed May 24, 1922.

To all whom it may concern Be it known that we, JOHN A.-LAMONT and LAwnnNon RICHARDSON, citizens of the United States, residing, respectively, at Chicago, in the county of (look and State of Illinois, and at Louisville, in the county of Jefferson and State of Kentucky, have jointly invented certain new and useful Improvements in a Six-Nheel-Truck Equalizing Arrangement, of which the following is a specification.

This invention relates to a six-wheel equalizing arrangement and is a modification of the arrangement disclosed and claimed in our co-pending application, Se-

rial No. 563,333, filed May 24, 1922.

Oneobject of the invention is to provide a simple and efficient six-wheel equalizing truck arrangement whereby an equal divi- 2 sion of the bolster end loads to the middle journal boxes on both sides of the truck is insured and accordingly, any tendency of said middle journal boxes to tilt is overcome.

Another object is to provide a simple cooperative arrangement between the equalizing levers and the middle journal boxes whereby there is no tendency to cramp said journal boxes.

Another object is to provide a simple, durable and efficient six-wheel equalizing truck arrangement adapted to meet the various requirements under service conditions.

These and other objects are accomplished by means of the arrangement disclosed by the accompanying sheet of drawings, in which- Figure 1 is a fragmentary longitudinal sectional view taken through the side frame of a six-wheel truck embodying our invention;

Figure 2 is a sectional view taken in the plane of line 22 of Figure 1; and

Figure 3 is a detail sectional view taken in the plane of line 3--3 of Figure 1.

The various novel features of the invention will be apparent from the following description and drawings, and will be particularly pointed out in the appended claims.

Referring to, the figures of the drawings, it will be noted that the invention is disclosed in connection with a six-wheel type of truck in which each side frame 10 has depending spaced side walls 11 and 12. Each Serial No. 563,334.

side frame has a relatively large central opening 13 for the reception of an intermediate journal box 14 and other associated parts, to be referred. to hereinafter. Each side frame also has openings for end our-nal boxes, not shown, and also openings 15 for the reception of the ends of transverse bolster members 16. The load is transmitted to the various journal boxes through the wardly and inwardly and finally terminate in longitudinally extending portions which have atelescopic relationship. More specifically, the right hand equalizing lever terminates in a tongue 20 the thickness of which is variable, as shown particularly in Figure l of the drawings. Said tongue has laterally extending trunnion portions 21 which pass into openings 22 in a sleeve 23 received within and slidably mounted in a pocket; 24 formed in the inner end ofthe left hand equalizing lever 17. Accordingly, as the inner ends of the equalizing levers rise and fall, there is a slight relative longi tudinal movement between the ends thereof. Each equalizing lever 17 has a bracket portion 25 which receives a friction reducing rocker 26 which rests upon a spring cap 27 mounted upon a plurality of springs 28 mounted in pockets 29 formed in the intermediate journal box at opposite sides of the journal receiving portion 30. The upper portions 31 of the sides of the journal box are bifurcated whereby the inner portions of the equalizing lever 17 pass through the sides of such journal box. The side wall portions 31 of the journal box are engaged by rollers 32 for guiding the intermediate journal box in its vertical movements.

By referring to Figure 2 or the drawings, it will be noted that two rollers 32 engage each side of the journal box, such rollers be- From the ing carried by the equalizing levers l? and more specifically being mounted upon suitable pins 33 carried by said equalizing levers. It will be noted that a horizontal line drawn between the lever fulcrum pins 18 will pass through the centers of the roller pins 33 and accordingly, any movement of the roller members 32 as a result of the s vinging up and down movement of the equalizing lever 17 will be practically vertical and, accordingly, such rollers 32 will in nowise cramp or tend to cramp the associated intermediate journal box. Q

In this connection it vill be noted that the rockers 26 frictionally engage the spring caps 27 in substantially the same horizontal plane, so that any relative vertical movement between the side frame, equalizing levers and intermediate journal box will cause a minimum relative longitudinal movement between such rockers 26 and spring caps 27.

The pins 33 carrying the roll rs 32 are mounted between the side walls 11 and 12 of the side frame in a manner to maintain the side frame and the equalizing levers in proper longitudinal alignment.

By means of the arrangement herein shown, the load to the various ournal boxes is equalized at all times, the intermediate journal boxes are prevented form tilting, such intermediate journal boxes are guided in their vertical movements in such a manner that they have the proper amount of freedom, and the various parts are arranged in a manner such that said parts have the proper relative movements and such relative movements reduced to a minimum where such is desirable.

B the use of rockers 26 between the spring caps 27 and bracket portions of the equalizing levers, the friction between these parts, due to lateral movements of the intermediate journal boxes is greatly reduced.

it is our intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

lVe claim:

1. In a six-wheel truck, the combination of a side frame, journal boxes associated therewith, equalizing levers for distributing the load to said journal boxes, and rollers carried by said equalizing levers for guiding the vertical movements of the intermediate journal box.

2. In a six-Wheel truck, the combination of a side frame, journal boxes associated therewith, an equalizing lever for distributing the load to said journal boxes, and a roller carried by said equalizing lever for guiding one of said journal boxes in a given movement.

3. In a six-wheel truck, the combination of a side frame, journal boxes associated therewith, equalizing levers for distributing the load to said journal boxes, and roller means associated with said equalizing levers and one of said journal boxes whereby the latter is guided in a given movement.

i. In a six-wheel truck, the combination of a side frame, journal boxes associated therewith, equalizing levers pivotally connected to said. side frame, and members pi otally mounted on said equalizing levers for guiding the intermediate journal box in a given movement.

5. In a six-wheel truck, the combination of a side frame, journal boxes associated therewith, equalizing levers pivotally connected to said side frame, and members 'pivotally mounted on said equalizing),- levers and being substantially in the same horizontal plane as the lever pivotal points for guiding a given movement of the intermediate journal box and preventing cramping of the same.

6. In a six-wheel truck, the combination of a side frame, an intermediate journal box associated therewith, equalizing levers trans 1 mitting a load to said journal box, and antifriction means operative between said levers and journal for reducing friction due to relative lateral movement of said journal and levers.

Signed at Chicago, Illinois, this 15th day of May, 1922.

JOHN A. LAMONT. LAWRENCE RICHARDSON. 

